Paris has always been a moveable feast. There are many people, Parisians and others, who think the city was destroyed long before Hitler ordered it to be burned in 1944 and others who think it has been repeatedly destroyed since, in the name of renovation, development, restoration.

The naval blockade of Germany during the First World War is a subject that is little treated today. Yet estimates of civilian deaths caused by it range from around 400,000 to more than three-quarters of a million. Not until there were German signatures on the Treaty of Versailles was it fully lifted.

Hersch Lauterpacht and Raphael Lemkin, two of the fathers of modern international law, spent significant time in what is now the Ukrainian city of Lviv. A cultured oasis of Habsburg culture before the First World War, the city would change hands eight times between 1914 and 1944.

Isaiah Berlin had not only a great gift for political philosophy but an unusual talent for verbal expression: his wartime diplomatic despatches from the US were greatly prized by Churchill. A new book by his editor surprisingly reveals that he was very reluctant to have his work published.

Charles de Gaulle was a traditional Catholic Christian. He rarely spoke of or even mentioned God but rarely failed to speak instead of France, the great stained-glass rose window in which the divine light had glowed through the centuries in radiance or in sombre melancholy.

Anti-Catholic riots in London in 1780 led to 1,000 deaths. It would be almost another fifty years before equality of citizenship was finally established, the brilliant campaigning of O’Connell and the determination of Wellington finally overcoming the hysterical opposition of the king.

If historian Mark Mazower’s father was a quiet man, his reticence was nothing compared to his father’s. Starting from some diaries found in a wardrobe, Mazower has traced an epic and often tragic family history that played out against the turmoil and violence of the early twentieth century.

The Congo Free State, a territory in which Belgium’s King Leopold II ran a hugely murderous regime of exploitation at the turn of the twentieth century, had been called ‘darkest Africa’. On this darkness, not of course innate, the campaigner ED Morel shone a strong light.

More and more people describe themselves as ‘spiritual but not religious’. Yet perceptions of what it is to be religious have changed significantly and broadened over the last sixty years. Perhaps, for a good life, we need not just human rights culture but the Sermon on the Mount.

That Mario Vargas Llosa should champion liberal principles is scarcely surprising, given the damage wrought by rival doctrines in South America. His new study might have benefited, however, from considering the ways in which liberal politics seems to have come unstuck elsewhere.